68 



The lowermost cells in the assimilating filaments are larger 

 and often somewhat irregularly shaped ; their breadth is about 

 40//; higher up the cells grow thinner, about 17// and keep this 

 diameter almost until the apex. The whole assimilating filament 

 reaches a length of about 400 500/2. 



The medullary cells are large subcylindric-barrelshaped, their 

 diameter reaching a length of up to 150// or more and the whole 

 length of the cells about ten times the breadth. With a trans- 



Fig. 68. Liagora elongata Zanardini. a, assimilating filaments with hairs and 

 (b) with antheridia. (a, about 140 : 1, b 60 : 1). 



verse section (Fig. 70) one sees that they are not lying close to- 

 gether in any case not after decalcification, but imbedded in 

 mucilage, and in this irregularly bent thin filaments run in all 

 directions ; these last mentioned filaments consist of long nearly 

 cylindrical cells, the diameter of which is about 8 10// and their 

 length about 10 times the breadth. These thin filaments have 

 their origin from the large basal cells in the assimilating fila- 

 ments. 



From nearly all the summits of the young assimilating fila- 

 ments long hairs arise (Fig. 68); these are about 5 ( thick, in 

 their uppermost somewhat swollen end about 8// and reach a 



